Hello, I have a question about modifying dinamicaly the 'DWORD dwStyle' styles of an edit or rich-edit window. That's what I have:
hEd=CreateWindowEx(WS_EX_C
"RICHEDIT",
"",
WS_CHILD|WS_VISIBLE|WS_VSC
50,
50,
200,
200,
hwnd,
(HMENU)AREA_EDICIO,
hInstance,
NULL);
My question is: is there a way to add new styles (like ES_AUTOHSCROLL). I have read the 'Win32 programer's Reference' but I can't find any message to do it (neither for edit -ES_...- nor for rich edit -EM_...-, nor for window -WM_...-). Finally I have tested something (to see what doesit happens)
SendMessage(hEd,ES_AUTOHSC
and as I axpect that don't work; also I have tried with several other combinations but without the expected results.
Thank's in advance
jbosch(vosk)
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Some styles could be changed using GetWindowLong() / SetWindowLong(), but not all. By example,
DWORD style = GetWindowLong(ctrlHwnd, GWL_STYLE);
style |= ES_READONLY;
SetWindowLong(ctrlHwnd, GWL_STYLE, style);
There is a dirty trick for the case of styles that are not allowed to be changed, you can maintain 2 separated controls, you can hide one and show the other, when switching you must copy entire text between both.
Hello, thank's both for your time and comments.
nonubik: yes, I have already read it, but I was wondering if there was a hidden trick, or maybe I was wondering if I understood well.
jaime_olivares: the dirty trick that you say about using two edits is exactly which I have been using since now, and I think that is wich I'll use in future.
I needed it to switch between WS_AUTOHSCROLL and line adjust mode, something like as the notepad effect. I have been trying to change the extended styles with the 'SetWindowLong()', but I find it a bit more fussing. The trick that I have been using is to create 2 richedit, one with autohsroll style and a second with position at 0,0, size 0,0, and without autoh style; then administrying the active window with a simple 'int' that points to the identifyer, so I don't need to worry about the 'active' control because always refer to it like 'GetDlgItem(hwnd,ACTIVE_ID
Let me split the points, hope it will be the right.
Thank's both.
jbosch(vosk)
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by: nonubikPosted on 2005-06-14 at 03:38:01ID: 14209671
I'm afraid the style cannot be changed. MSDN states "After the control has been created, these styles cannot be modified, except as noted. " And there's no exception for ES_AUTOHSCROLL http://msdn.microsoft.com/